2 Answers
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A lot of small and big developers use Distimo Monitor, most probably because they like the feature set, number of supported stores and ad networks and also because they trust the data privacy and security. Just give it a try, for questions you can always use the contact form.

Appfigures has worked very well for me. I pay for an account (you need to pay a little if you have more than a certain number of apps, or want to receive a daily status email) Their service handles iOS and Android (and probably others)

I also have a free account with App Annie which I use mainly for user reviews around the world (their status reports are in dollars, and I work in pounds, or I might have used them instead)

App Figures have just added user reviews too, so I can probably cancel App Annie now.